EP2073127A1 - Method and device for communication between several connection interfaces - Google Patents

Method and device for communication between several connection interfaces Download PDF

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Publication number
EP2073127A1
EP2073127A1 EP08171344A EP08171344A EP2073127A1 EP 2073127 A1 EP2073127 A1 EP 2073127A1 EP 08171344 A EP08171344 A EP 08171344A EP 08171344 A EP08171344 A EP 08171344A EP 2073127 A1 EP2073127 A1 EP 2073127A1
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list
buffer
skb
rxs
additional
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French (fr)
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EP2073127B1 (en
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Marius Lazar
Thomas Froment
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Alcatel Lucent SAS
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Alcatel Lucent SAS
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/382—Information transfer, e.g. on bus using universal interface adapter
    • G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices

Abstract

The device has connection interfaces (SC1-SC3) each including a reception list (Rx) for identifying buffers containing received data stream. The interface (SC3) has an additional reception list (RxS) for identifying the buffers containing the data stream received by the interfaces participating in a messaging process. The buffers include an additional preceding-pointer indicating one of the buffers, which precedes a current buffer in the list (RxS), and an additional succeeding-pointer indicating the buffer after the current buffer in the list (RxS). An independent claim is also included for a method for carrying out communication between connection interfaces in a communication network.

Description

La présente invention se rapporte à la communication entre plusieurs interfaces de connexion dans un réseau de communication.The present invention relates to communication between a plurality of connection interfaces in a communication network.

Elle trouve une application dans tout processus qui reçoit des messages ou données en provenance de plusieurs sources via des réseaux de communication de type Internet et fonctionnant selon des protocoles tels que TCP (« Transport Control Protocol ») ou équivalents.It finds an application in any process that receives messages or data from several sources via Internet-type communication networks and operating according to protocols such as TCP (Transport Control Protocol) or equivalent.

Généralement, une interface de connexion, appelée encore « socket » en anglo-saxon, comprend une liste-réception répertoriant des mémoires tampon contenant le flux de données reçues et une liste-émission répertoriant des mémoires tampons contenant le flux de données à émettre.Generally, a connection interface, also called "socket" in Anglo-Saxon, includes a list-reception listing buffers containing the stream of data received and a list-issuing lists buffers containing the data stream to be transmitted.

Les liste-réception et liste-émission sont dites « doublement chainées » dans la mesure où les mémoires tampon qui les constituent possèdent chacune une structure comprenant un pointeur-précédent indiquant la mémoire tampon qui précède la mémoire tampon courante dans la liste correspondante et un second pointeur-suivant indiquant la mémoire tampon qui suit la mémoire tampon courante dans la liste correspondante.The list-reception and list-transmission are said to be "doubly chained" insofar as the buffers which constitute them each have a structure comprising a pointer-precedent indicating the buffer memory which precedes the current buffer memory in the corresponding list and a second one. pointer-following indicating the buffer that follows the current buffer in the corresponding list.

Avec une seule interface de connexion le processus peut recevoir les messages ou les données en attendant leur arrivée dans la liste-réception de ladite interface.With a single connection interface the process can receive the messages or the data while waiting for their arrival in the list-reception of said interface.

Avec plusieurs interfaces de connexion il est nécessaire d'exécuter d'abord une analyse cyclique des listes-réception pour retrouver les interfaces de connexion ayant reçu des messages destinés à être lus.With several connection interfaces it is necessary to first perform a cyclic analysis of the lists-reception to find the connection interfaces having received messages intended to be read.

Plusieurs solutions connues, notamment celles dénommées « select », « poll », « kqueue », « epoll » sont proposées pour mettre en oeuvre cette d'analyse.Several known solutions, in particular those designated "select", "poll", "kqueue", "epoll" are proposed to implement this analysis.

Ces solutions connues sont relativement satisfaisantes mais ne tiennent pas compte de l'ordre d'arrivée des messages et impliquent un travail supplémentaire.These known solutions are relatively satisfactory but do not take into account the order of arrival of the messages and involve additional work.

Il en résulte une dégradation importante des performances du réseau, cette dégradation étant d'autant plus importante que le nombre de sockets à lire est grand, par exemple supérieur à 1000.This results in a significant degradation of the performance of the network, this degradation being all the more important that the number of sockets to read is large, for example greater than 1000.

La présente invention remédie à cet inconvénient.The present invention overcomes this disadvantage.

Elle porte sur un dispositif de communication entre plusieurs interfaces de connexion dans un réseau de communication dans lequel chaque interface de connexion comprend une liste-réception répertoriant des mémoires tampon contenant le flux de données reçues, lesdites mémoires tampon ayant chacune une structure comprenant un pointeur-précédent indiquant la mémoire tampon qui précède la mémoire tampon courante dans la liste réception correspondante et un second pointeur-suivant indiquant la mémoire tampon qui suit la mémoire tampon courante dans la liste réception correspondante.It relates to a communication device between several connection interfaces in a communication network in which each interface connection comprises a list-receipt listing buffers containing the received data stream, said buffers each having a structure comprising a preceding-pointer indicating the buffer memory which precedes the current buffer in the corresponding reception list and a second-pointer-pointer. next indicating the buffer that follows the current buffer in the corresponding receiving list.

Selon une définition générale de l'invention, l'une des interfaces de connexion est désignée apte à recevoir le flux de données reçues par chaque interface de connexion associée à un processus choisi,According to a general definition of the invention, one of the connection interfaces is designated capable of receiving the stream of data received by each connection interface associated with a chosen process,

ladite interface de connexion ainsi désignée comprend en outre une liste-réception supplémentaire répertoriant des mémoires tampons contenant le flux de données reçues par l'ensemble des interfaces de connexion participant à un processus choisi, etsaid connection interface thus designated further comprises an additional list-list listing buffers containing the flow of data received by all the connection interfaces participating in a chosen process, and

les mémoires tampon de chaque interface de connexion appartiennent en même temps aux deux listes réception et comprennent chacune en outre un pointeur-précédent supplémentaire indiquant la mémoire tampon qui précède la mémoire tampon courante dans la liste-réception supplémentaire et un pointeur-suivant supplémentaire indiquant la mémoire tampon qui suit la mémoire tampon courante dans la liste réception supplémentaire.the buffers of each connection interface belong at the same time to the two reception lists and each further comprises an additional previous-pointer indicating the buffer that precedes the current buffer in the additional reception-list and an additional-pointer-pointer indicating the buffer that follows the current buffer in the additional receive list.

Ainsi, le dispositif selon l'invention permet au niveau de l'interface de connexion ainsi désignée d'accéder au flux de données reçues par l'ensemble des interfaces de connexion participant audit processus, et cela dans l'ordre d'arrivée dudit flux de données reçues.Thus, the device according to the invention makes it possible, at the level of the connection interface thus designated, to access the stream of data received by all the connection interfaces participating in said process, and this in the order of arrival of said stream received data.

Il en résulte une amélioration des performances du réseau par rapport aux structures antérieures.This results in an improvement in network performance compared to previous structures.

La présente invention a également pour objet un procédé de communication mis en oeuvre par le dispositif selon l'invention.The present invention also relates to a communication method implemented by the device according to the invention.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lumière de la description détaillée ci-après et des dessins dans lesquels :

  • la figure 1 illustre schématiquement un dispositif de communication équipé d'une interface de connexion désignée conforme à l'invention ; et
  • la figure 2 illustre schématique une structure d'une mémoire tampon conforme à l'invention.
Other features and advantages of the invention will emerge in the light of the detailed description below and the drawings in which:
  • the figure 1 schematically illustrates a communication device equipped with a designated connection interface according to the invention; and
  • the figure 2 schematically illustrates a structure of a buffer memory according to the invention.

En référence à la figure 1 , on a représenté un processus de type messagerie TCP/IP.With reference to the figure 1 Depicts a TCP / IP messaging type of process.

Un tel processus reçoit des messages en provenance de plusieurs sources via un réseau de communication fonctionnant sous le protocole de type TCP.Such a process receives messages from several sources via a communication network operating under the TCP type protocol.

A chaque source est associée une interface de connexion SC, individualisée en SC1, SC2 et SC3.Each source is associated with an SC connection interface, individualized in SC1, SC2 and SC3.

Chaque interface de connexion SC comprend une liste-réception RX répertoriant des mémoires tampon SKB contenant le flux de données reçues.Each SC connection interface includes an RX receive list listing SKB buffers containing the received data stream.

Chaque interface de connexion comprend également une liste-émission (non représentée) répertoriant des mémoires tampons contenant le flux de données à émettre.Each connection interface also includes a transmission list (not shown) listing buffers containing the data stream to be transmitted.

En référence à la figure 2 , la structure de la liste réception RX est telle que chaque mémoire tampon SKB comprend un pointeur-précédent PP indiquant la mémoire tampon SKB qui précède la mémoire tampon courante dans la liste correspondante et un second pointeur-suivant PS indiquant la mémoire tampon qui suit la mémoire tampon courante dans la liste correspondante.With reference to the figure 2 , The structure of the RX reception list is such that each SKB buffer comprises a previous-pointer PP indicates the SKB buffer that precedes the current buffer memory in the corresponding list and a second next pointer-PS indicating the buffer memory following the current buffer in the corresponding list.

Les mémoires tampons sont chainées entre elles pour une interface de connexion choisie.The buffers are chained together for a chosen connection interface.

Chaque mémoire tampon SKB identifie la structure du dispositif ND pour lequel le paquet de données est envoyé ou à partir duquel le paquet de données est reçu.Each SKB buffer identifies the structure of the ND device for which the data packet is sent or from which the data packet is received.

A chaque paquet est associé une mémoire tampon ou buffer SKB. Les en têtes des paquets sont correctement localisés par l'intermédiaire d'un jeu de pointeurs TH, IPH et MAC.Each packet is associated with a buffer or buffer SKB. The headers of the packets are correctly located via a set of pointers TH, IPH and MAC.

Les buffers sont chaînés pour une interface de connexion donnée et contiennent des informations telles que les liens aux en tête des protocoles, le dispositif associé au paquet.The buffers are chained for a given connection interface and contain information such as links to the top of the protocols, the device associated with the packet.

On fait à nouveau référence à la figure 1 . We are again referring to the figure 1 .

L'interface de connexion SC3 est désignée à recevoir aussi le flux de données reçues de chaque interface de connexion SC1, SC2 et SC3 associées à un processus choisi, par exemple le processus de messagerie.The connection interface SC3 is designated to also receive the stream of data received from each connection interface SC1, SC2 and SC3 associated with a chosen process, for example the messaging process.

L'interface de connexion SC3 comprend une liste-réception supplémentaire RXS répertoriant des mémoires tampons SKB contenant le flux de données reçues par l'ensemble des interfaces de connexion participant audit processus.The connection interface SC3 comprises an additional RXS listener containing SKB buffers containing the data stream received by all the connection interfaces participating in said process.

On fait à nouveau référence à la figure 2 , We are again referring to the figure 2 ,

Les mémoires tampon SKB de chaque interface de connexion SC1, SC2, SC3 appartiennent en même temps aux deux listes réception RX, et RXS.The buffers SKB of each connection interface SC1, SC2, SC3 belong at the same time to the two reception lists RX, and RXS.

Les mémoires tampon SKB comprennent chacune en outre un pointeur-précédent supplémentaire PPS indiquant la mémoire tampon qui précède la mémoire tampon courante dans la liste-réception supplémentaire RXS et un pointeur-suivant supplémentaire PSS indiquant la mémoire tampon qui suit la mémoire tampon courante dans la liste réception supplémentaire RXS.The buffers SKB each furthermore comprise an additional PPS pointer-precedent indicating the buffer that precedes the current buffer in the additional RXS receive-list and an additional PSS-pointer-following indicating the buffer memory that follows the current buffer memory in the additional reception list RXS.

Au niveau de l'interface de connexion ainsi désignée SC3, il est possible d'accéder au flux de données reçues par l'ensemble des interfaces de connexion participant audit processus, et cela dans l'ordre d'arrivée dudit flux de données reçues.At the connection interface thus designated SC3, it is possible to access the stream of data received by all the connection interfaces participating in said process, and this in the order of arrival of said stream of received data.

En effet, la liste réception supplémentaire RXS contient les informations de pointage permettant de retrouver les flux de données reçues selon l'ordre d'arrivée de ces données dans les différentes interfaces de connexion.Indeed, the additional reception list RXS contains the pointing information for retrieving the data streams received according to the order of arrival of these data in the different connection interfaces.

Par exemple, en référence à la figure 1 , l'ordre d'arrivée des flux de données reçues est le suivant :

  • Skb 3.1
  • Skb 2.1
  • Skb 1.1
  • Skb 3.2
  • Skb 1.2
  • Skb 1.3
For example, with reference to figure 1 , the order of arrival of the received data streams is as follows:
  • Skb 3.1
  • Skb 2.1
  • Skb 1.1
  • Skb 3.2
  • Skb 1.2
  • Skb 1.3

Grâce à la liste réception supplémentaire RXS, il est possible d'accéder aux flux de données selon cet ordre tandis qu'en l'absence de la liste de réception supplémentaire, l'accès serait en fonction du rang de l'interface de connexion, c'est à dire d'abord l'interface de connexion SC1 puis l'interface de connexion SC2 et après SC3. Dans ce cas l'ordre de traitement des flux de données serait :

  • Skb 1.1
  • Skb 1.2
  • Skb 1.3
  • Skb 2.1
  • Skb 3.1
  • Skb 3.2
Thanks to the additional reception list RXS, it is possible to access the data streams in this order whereas in the absence of the additional reception list, the access would be according to the rank of the connection interface, that is to say first the connection interface SC1 then the connection interface SC2 and after SC3. In this case the order of data flow processing would be:
  • Skb 1.1
  • Skb 1.2
  • Skb 1.3
  • Skb 2.1
  • Skb 3.1
  • Skb 3.2

Claims (2)

Dispositif de communication de communication entre plusieurs interfaces de connexion (SC1, SC2, SC3) dans un réseau de communication dans lequel chaque interface de connexion (SC1,SC2, SC3) comprend une liste-réception (RX) répertoriant des mémoires tampon (SKB) contenant le flux de données reçues, ladite liste-réception (RX) ayant une structure selon laquelle chaque mémoire tampon (SKB) comprend un pointeur-précédent (PP) indiquant la mémoire tampon qui précède la mémoire tampon courante dans la liste réception correspondante et un second pointeur-suivant (PS) indiquant la mémoire tampon qui suit la mémoire tampon courante dans la liste réception correspondante,
caractérisé en ce que l'une (SC3) des interfaces de connexion (SC) est désignée apte à recevoir le flux de données reçues par chaque interface de connexion associée à un processus choisi,
en ce que ladite interface de connexion ainsi désignée (SC3) comprend en outre une liste-réception supplémentaire (RXS) répertoriant des mémoires tampons contenant le flux de données reçues par l'ensemble des interfaces de connexion participant à un processus choisi, et
en ce que les mémoires tampon (SKB) de chaque interface de connexion (SC1,SC2,SC3) appartiennent en même temps aux deux listes réception (RX, et RXS) et comprennent chacune en outre un pointeur-précédent supplémentaire (PPS) indiquant la mémoire tampon qui précède la mémoire tampon courante dans la liste-réception supplémentaire (RXS) et un pointeur-suivant supplémentaire (PSS) indiquant la mémoire tampon qui suit la mémoire tampon courante dans la liste réception supplémentaire (RXS),
ce qui permet d'accéder au flux de données reçues par l'ensemble des interfaces de connexion participant audit processus, dans l'ordre d'arrivée dudit flux de données reçues.Communication communication device between a plurality of connection interfaces (SC1, SC2, SC3) in a communication network in which each connection interface (SC1, SC2, SC3) comprises a receive list (RX) listing buffers (SKB) containing the received data stream, said receiving list (RX) having a structure according to which each buffer memory (SKB) comprises a previous-pointer (PP) indicating the buffer memory which precedes the current buffer memory in the corresponding reception list and a second pointer-following (PS) indicating the buffer memory which follows the current buffer in the corresponding reception list,
characterized in that one (SC3) of the connection interfaces (SC) is designated adapted to receive the data stream received by each connection interface associated with a selected process,
in that said so-called connection interface (SC3) further comprises an additional receive-list (RXS) listing buffers containing the data stream received by all of the connection interfaces participating in a selected process, and
in that the buffers (SKB) of each connection interface (SC1, SC2, SC3) belong at the same time to the two reception lists (RX, and RXS) and each further comprise an additional preceding pointer (PPS) indicating the a buffer that precedes the current buffer in the additional receive-list (RXS) and an additional-pointer-to-one (PSS) indicating the buffer that follows the current buffer in the supplementary receive list (RXS),
which makes it possible to access the stream of data received by all the connection interfaces participating in said process, in the order of arrival of said stream of received data. Procédé de communication entre plusieurs interfaces de connexion (SC1, SC2, SC3) dans un réseau de communication dans lequel chaque interface de connexion (SC1,SC2, SC3) comprend une liste-réception (RX) répertoriant des mémoires tampon (SKB) contenant le flux de données reçues, ladite liste-réception (RX) ayant une structure selon laquelle chaque mémoire tampon (SKB) comprend un pointeur-précédent (PP) indiquant la mémoire tampon qui précède la mémoire tampon courante dans la liste réception correspondante et un second pointeur-suivant (PS) indiquant la mémoire tampon qui suit la mémoire tampon courante dans la liste réception correspondante,
caractérisé en ce que l'une (SC3) des interfaces de connexion (SC) est désignée apte à recevoir le flux de données reçues par chaque interface de connexion associée à un processus choisi,
en ce que ladite interface de connexion ainsi désignée (SC3) comprend en outre une liste-réception supplémentaire (RXS) répertoriant des mémoires tampons contenant le flux de données reçues par l'ensemble des interfaces de connexion participant à un processus choisi, et
en ce que les mémoires tampon (SKB) de chaque interface de connexion (SC1,SC2,SC3) appartiennent en même temps aux deux listes réception (RX, et RXS) et comprennent chacune en outre un pointeur-précédent supplémentaire (PPS) indiquant la mémoire tampon qui précède la mémoire tampon courante dans la liste-réception supplémentaire (RXS) et un pointeur-suivant supplémentaire (PSS) indiquant la mémoire tampon qui suit la mémoire tampon courante dans la liste réception supplémentaire (RXS),
ce qui permet d'accéder au flux de données reçues par l'ensemble des interfaces de connexion participant audit processus, dans l'ordre d'arrivée dudit flux de données reçues.Method of communication between several connection interfaces (SC1, SC2, SC3) in a communication network in which each connection interface (SC1, SC2, SC3) comprises a receive-list (RX) storing buffers (SKB) containing the received data stream, said receiving list (RX) having a structure according to which each buffer (SKB) comprises a previous-pointer (PP) indicating the buffer that precedes the current buffer in the corresponding receiving list and a second-following pointer (PS) indicating the buffer memory which follows the current buffer in the corresponding reception list,
characterized in that one (SC3) of the connection interfaces (SC) is designated adapted to receive the data stream received by each connection interface associated with a selected process,
in that said so-called connection interface (SC3) further comprises an additional receive-list (RXS) listing buffers containing the data stream received by all of the connection interfaces participating in a selected process, and
in that the buffers (SKB) of each connection interface (SC1, SC2, SC3) belong at the same time to the two reception lists (RX, and RXS) and each further comprise an additional preceding pointer (PPS) indicating the a buffer that precedes the current buffer in the additional receive-list (RXS) and an additional-pointer-to-one (PSS) indicating the buffer that follows the current buffer in the supplementary receive list (RXS),
which makes it possible to access the stream of data received by all the connection interfaces participating in said process, in the order of arrival of said stream of received data.
EP08171344A 2007-12-18 2008-12-11 Method and device for communication between several connection interfaces Not-in-force EP2073127B1 (en)

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FR2925190B1 (en) 2009-11-20
US7852858B2 (en) 2010-12-14
US20090310611A1 (en) 2009-12-17
WO2009080997A1 (en) 2009-07-02
ATE534082T1 (en) 2011-12-15
EP2073127B1 (en) 2011-11-16
CN101488910A (en) 2009-07-22
KR20100097705A (en) 2010-09-03
KR101428138B1 (en) 2014-08-07
FR2925190A1 (en) 2009-06-19
JP4938134B2 (en) 2012-05-23
CN101488910B (en) 2012-05-23
JP2011509004A (en) 2011-03-17

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